3 C2H2 + 8 KMnO4 → 3 K2C2O4 + 8 MnO2 + 2 KOH + 2 H2O |Traloitructuyen.com

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3 C2H2 + 8 KMnO4 → 3 K2C2O4 + 8 MnO2 + 2 KOH + 2 H2O

This is an oxidation-reduction (redox) reaction:

8 Mn^VII + 24 e^- → 8 Mn^IV (reduction) 6 C^-I - 24 e^- → 6 C^III (oxidation)

KMnO₄ is an oxidizing agent, C₂H₂ is a reducing agent. [external_link offset=2]

Reactants:

C₂H₂ – Acetylene , Ethyne
- Other names: Ethine , HC#CH , [CH(CH)]
- Appearance: Colorless gas ; Colourless gas dissolved in acetone under pressure ; Colorless gas with a faint, ethereal odor. [Note: Commercial grade has a garlic-like odor. Shipped under pressure dissolved in acetone.]
KMnO₄ – Potassium manganate(VII)
- Other names: Potassium permanganate , Chameleon mineral , Condy's crystals
- Appearance: Purplish-bronze-gray needles | magenta–rose in solution ; Dark purple crystals

Products:

K₂C₂O₄
MnO₂ – Manganese oxide , Manganese(IV) oxide
- Other names: Manganese dioxide , Pyrolusite , Hyperoxide of manganese
- Appearance: Brown-black solid ; Black-to-brown powder
KOH – Potassium hydroxide
- Other names: Caustic potash , Lye , Potash lye
- Appearance: White solid, deliquescent ; White hygroscopic solid in various forms ; Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.]
H₂O – Water, oxidane
- Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide
- Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas